Innovative height adjustment technology offers six (6) collars in one. Two-piece polyethylene design enhances patient comfort and is easily adjusted with contact closure tabs. Anterior and posterior flex tabs on the front and back panels provide improved rigidity and durability. The large trachea opening provides functional access for the airway management and other essential procedures. Removable, foam laminated pads wick away moisture to ensure proper patient hygiene and comfort while preventing skin irritation. x-ray, CT and MRI lucent.